After several quarters of slumping sales, Chipotle has some sweet news for loyal fans.

On Tuesday, the Mexican Grill released details on its previously announced new dessert menu item. Chipotle spokesman Chris Arnold told Business Insider that the chain will start serving buñuelos, a classic Mexican treat, nationwide in May.

So what exactly is a buñuelo?

It starts with one main ingredient that the chain already keeps in droves—tortillas. They’re deep fried, tossed in cinnamon and sugar, topped with honey, and will be served with a caramel apple dipping sauce.

The item is the chain’s first foray into the sweets category.

The news comes amid a troubling announcement that the company recently discovered “unauthorized activity” within the network that supports its restaurant payment systems.

Though the chain did not specify whether the alleged breach compromised point-of-sale systems nationwide, or was confined to a specific location, Chipotle says its investigation—which is ongoing—believes that it most likely affected credit card transactions that occurred from March 24 through April 18 of this year.

While the chain continues to investigate the situation, it is advising all customers to thoroughly check their credit card statements.

However, Chipotle also said Tuesday that same-store restaurant sales actually rose almost 18 percent during the first three months of the year, a big turnaround for the company, which has faced months of declining sales after a wave of foodborne illnesses rocked restaurants around the country in 2015.